English Product Guide

Intel Desktop Board DG41KR Product Guide

Legacy Input/Output (I/O) Controller

The legacy I/O controller provides the following:

• One serial port interface via an onboard header

• One parallel port interface via an back panel connector

• One diskette drive interface via an onboard connector

• One PS/2 port for keyboard or mouse support

• Serial IRQ interface compatible with serialized IRQ support for PCI systems

• Intelligent power management, including a programmable wake up event interface

• PCI power management support

NOTE

The PS/2 port supports both keyboard and mouse, but not concurrently. Automatic

PS/2 device detection will occur during boot and cannot be changed until the next

system boot.

LAN Subsystem

The LAN subsystem includes:

• Intel

ICH7

• Realtek 8111DL Gigabit Ethernet Controller

• RJ-45 LAN connector with integrated status LEDs

The subsystem features:

• CSMA/CD protocol engine

• LAN connect interface between ICH7 and the controller

• PCI Express power management

Two LEDs are built into the RJ-45 LAN connector located on the back panel (see

Figure 2). These LEDs indicate the operating states of the LAN.

Figure 2. LAN Status LEDs